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Çѱ¹µµ·ÎÇÐȸ / v.8, no.3, 2006³â, pp.105-114
µÎ²¨¿î ÄÜÅ©¸®Æ®Æ÷ÀåÀÇ ¿øÀ§Ä¡ÆÄ¼â ±âÃþÈ­°ø¹ý
( Rubblization of Thick Concrete Pavement )
À̽¿ì;ÇѽÂȯ;°í¼®¹ü;±èÁö¿ø; °­¸ª´ëÇб³ Åä¸ñ°øÇаú;Çѱ¹µµ·Î°ø»ç ±³Åë±â¼ú¿ø;´ë¸²»ê¾÷(ÁÖ) ±â¼ú¿¬±¸¼Ò;ÅäÅ»ÆäÀ̺ê½Ã½ºÅÛ;
 
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³ëÈÄ ÄÜÅ©¸®Æ®Æ÷Àå ¼ö¸íÀ» ¿¬ÀåÇϱâ À§ÇÑ ¹æ¾ÈÀ¸·Î ¾Æ½ºÆÈÆ® µ¡¾º¿ì±â°¡ ÀϹÝÀûÀ̳ª ¹Ý»ç±Õ¿­À» ¾ïÁ¦ÇÏ±â ¾î·Æ´Ù´Â ´ÜÁ¡ÀÌ ÀÖ´Ù. ÀÌ·¯ÇÑ ¹Ý»ç±Õ¿­À» ¾ïÁ¦Çϱâ À§ÇÏ¿© ÁÙ´«ºÎ º¸¼ö, ÀÀ·Â¿ÏÈ­Ãþ ¼³Ä¡°¡ Àû¿ëµÇ±â´Â ÇÏÁö¸¸ ¹Ý»ç±Õ¿­ÀÇ ÁøÀü ¼Óµµ¸¦ ´ÊÃß´Â Á¦ÇÑÀûÀÎ ¼º°øÀ» º¸¿© ¿Ô´Ù. ÄÜÅ©¸®Æ®Æ÷Àå ½½·¡ºê¸¦ ¿øÀ§Ä¡¿¡¼­ ÆÄ¼âÇÏ¿© ±âÃþÀç·á·Î Ȱ¿ëÇÏ°í ±× À§¿¡ µ¡¾º¿ì±â Æ÷ÀåÀ» °Ç¼³ÇÏ´Â ¿øÀ§Ä¡ÆÄ¼â±âÃþÈ­ °ø¹ýÀº ±âÁ¸ µ¡¾º¿ì±â º¸°­°ø¹ýÀÌ °®°í ÀÖ´Â ¹Ý»ç±Õ¿­ ¹®Á¦¸¦ ¿Ïº®ÇÏ°Ô ÇØ°áÇÒ ¼ö ÀÖ´Â ÀåÁ¡À» °¡Áö°í ÀÖ´Ù. º» °ø¹ýÀ» Àû¿ëÇÒ °æ¿ì ÆÄ¼âµÈ ³ëÈÄ ÄÜÅ©¸®Æ® Æ÷ÀåÀÇ »óºÎÃþÀº 40mm-70mm·Î ÆÄ¼âµÇ³ª ÇϺÎÃþÀº 100mm ÀÌ»ó µÇ´Â °æ¿ì°¡ ÀϹÝÀûÀÌ´Ù. ±×·¯³ª ÄÜÅ©¸®Æ® µÎ²²°¡ 30cm ÀÌ»ó µÇ´Â °æ¿ì¿¡´Â ÀüüµÎ²²¸¦ ÀûÁ¤ Size·Î ÆÄ¼â°ñÀçÈ­ÇÏ´Â °ÍÀÌ ¾î·Æ´Ù. µû¶ó¼­ ÆÄ¼âµÈ ³ëÈÄ ÄÜÅ©¸®Æ® Æ÷ÀåÃþÀÌ ¹Ý»ç±Õ¿­À» À¯¹ß½ÃŰÁö ¾Ê°í µµ·Î±âÃþÀ¸·Î¼­ÀÇ ¿ªÇÒÀ» È®º¸ÇÒ ¼ö ÀÖ´Â ÀûÁ¤ ÆÄ¼â ±íÀ̸¦ ÆÄ¾ÇÇϱâ À§ÇÏ¿© ÆÄ¼â°ñÀç±íÀ̸¦ 0cm, 10cm, 20cm·Î º¯È­½ÃÄѰ¡¸ç simulation test¸¦ ¼öÇàÇÑ °á°ú, ÀûÁ¤ ÆÄ¼â ±íÀÌ 10cm¸¦ µµÃâÇÏ¿´´Ù(Lee, 2006). ¶ÇÇÑ ¼ÒÇüÆÄ¼âÀåºñ¸¦ Á¦ÀÛÇÏ¿© ½ÇÁ¦ µµ·Î¿Í µ¿ÀÏÇÑ ±âÁØÀ¸·Î ½ÃÇè Æ÷ÀåÀ» °Ç¼³ÇÏ¿© ÆÄ¼âÇìµå Çü»ó, ÆÄ¼â¿¡³ÊÁö, À¯È¿ÆÄ¼â ¸éÀû µîÀ» ´Þ¸®ÇÏ¿© µÎ²¨¿î ÄÜÅ©¸®Æ®Æ÷ÀåÇü½Ä¿¡ ÀûÇÕÇÑ ÆÄ¼â¹æ¹ýÀ» °³¹ßÇÏ¿´À¸¸ç PrototypeÀÇ ÆÄ¼âÀåºñ¸¦ °³¹ßÇÏ¿© ½ÇÁ¦ °ø¿ëÁßÀÎ °í¼Óµµ·Î¿¡¼­ ½ÃÇè½Ã°ø ¹× ¸ð´ÏÅ͸µÀ» ½Ç½ÃÇÏ¿© Á¦¾ÈµÈ ÆÄ¼â¹æ¹ýÀÇ ÀûÁ¤¼ºÀ» °ËÅäÇÏ¿´´Ù.
A popular alternative to extend the life of aged pavement is asphalt overlay. However, it has a very serious and inherent shortcoming in deterring a reflection crack. Although joint-rehabilitation and stress-relief techniques have been applied to deter such reflection cracks in aged pavement, the techniques had a limited success only in slowing down the progress of a reflection crack. Rubblization technique rubblizes the concrete pavement slab in situ and uses the rubblized slab as the base material. Then, pavement overlay is applied to finish off the rehabilitation of aged pavement. This rubblization technique has the advantage of solving the problem of reflection cracking completely. When rubblization technique is applied, the upper layer of aged concrete pavement is rubblized between 40mm-70mm in depth. However, the lower layer is typically rubblized more than 100mm in depth. Nevertheless, it is difficult to turn the entire concrete pavement of more than 30cm in depth into rubblized aggregate of appropriate size. Thus, a simulation experiment was carried out to find the appropriate rubblized depth, which avoids the reflection cracking and still maintains the function of subbase, by varying the depth of rubblized depth in loom increments of 0cm, 10cm, and 20cm. The result indicated the optimum rubblized depth was 10cm (Lee, 2006). Additionally, a small rubblizinge equipment was developed in order to derive the rubblization technique appropriate for thick concrete pavement. This equipment was tested out on an experimental pavement, which was constructed with the same standard and specification for the road in actual use, by varying its rubblizing head shape and energy as well as the effective area of rubblization. This experiment led to a prototype equipment for rubblization of thick concrete pavement. The prototype was put into use on a highway, undergoing a test construction and monitoring afterwards. This entire process was necessary for the validation of the proposed rubblization technique.
 
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¹Ý»ç±Õ¿­;¿øÀ§Ä¡ÆÄ¼â ±âÃþÈ­ °ø¹ý;µ¡¾º¿ì±â;reflection crack;rubbtization;overlay;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.8, no.3, 2006³â, pp.105-114
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200634741713380)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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